In addition to their negative impact on the food harvest, Red-Legged Grasshoppers can carry immature tapeworms and other wild bird parasites inside them. When a quail or wild turkey eats infected ones, those tapeworms and parasites can transfer to the bird's bloodstream and grow, thereby infecting the bird. Grasshoppers have natural enemies that help control their population in the wild. They can die from fungal or bacterial infections as well as from parasitic nematodes.
Females lay their fertilized eggs in soil. The numerous eggs hatch in the following spring and the nymphs start to feed. They will be full-grown adults in about 3 months and can remain active until that coming winter. If the spring season sees heavy rainfall, many eggs won't hatch. Dry springs, on the other hand beget large outbreaks that are difficult to control.